CN1864350A - Method for modem switching for use with mm-mb terminal - Google Patents
Method for modem switching for use with mm-mb terminal Download PDFInfo
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- CN1864350A CN1864350A CNA2004800293929A CN200480029392A CN1864350A CN 1864350 A CN1864350 A CN 1864350A CN A2004800293929 A CNA2004800293929 A CN A2004800293929A CN 200480029392 A CN200480029392 A CN 200480029392A CN 1864350 A CN1864350 A CN 1864350A
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- cdma
- terminal
- wcdma
- modulator
- demodulator
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/18—Selecting a network or a communication service
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/32—Hierarchical cell structures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/30—Connection release
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Abstract
The multi-mode multi-band terminal comprises: a RF antenna for CDMA-2000 and/or WCDMA signal, a RF transceiver to demodulate and output the WCDMA pilot signal, a measurement unit for pilot signal to measure demodulated signal and generate Ec/Io, the CDMA-2000/WCDMA modem to treat calling as individual protocol, a flash memory to store modem switch program, and a controller to load switch program and activate CDMA-2000 modem when the time for keeping Ec/Io less than set On threshold THON of CDMA-2000 more than set ON time Hd. This invention can reduce switch time greatly in MM-MB terminal.
Description
Technical field
The present invention relates to a kind of method of between the modulator-demodulator of MM-MB (multi-mode multiband) terminal, switching of being used for; More specifically, relate to a kind of changing method, when the terminal with the operation of WCDMA mode of priority moves on to the CDMA-2000 district from the overlay region, if the measured intensity of WCDMA pilot signal satisfies predetermined condition, then, can reduce the switching time between the modulator-demodulator by in advance the MM-MB terminal being switched to the CDMA-2000 idle condition.
Background technology
After the first generation mobile communication service that starts from about late period in the 1980's, continue to have developed the mobile communication service, described first generation mobile communication service mainly provides low-quality voice communications services under the analog cellular standard of for example AMPS (advanced mobile phone service).The service of second generation mobile communication provides improved voice communications services and low speed (14.4Kbps) data communication services under the digital cellular standard of for example GSM (global mobile system), CDMA (code division multiple access) or TDMA (time division multiple access).In addition,, used GHz level frequency band and developed PCS (personal communication service), therefore can realize also wanting further improved voice communications services and or the data transport service of low speed (144Kbps) along with the arrival of 2.5 third-generation mobile communications service.
Be used for comprising various communication equipments, for example user terminal, base station transmitter, base station controller, mobile switching centre, HLR (attaching position register), VLR (Visited Location Registor) etc. at the mobile communications network that uses up to 2.5 third-generation mobile communication services.
Provide the communication service of the 3rd generation: by the asynchronous WCDMA system of 3GPP (third generation partner plan) opinion according to dual mode; And synchronization CDMA-2000 system of advocating by 3GPP2.Particularly, the WCDMA system is a kind of wireless protocols of being recommended by IMT-2000, and now, the mass communication service provider is providing or preparing worldwide to provide WCDMA service.
The advantage of WCDMA system is by using spread spectrum scheme to guarantee high speed quality and large-capacity data transmission.The WCDMA system adopts 32Kbps ADPCM (adaptive difference pulse code modulation) to be used for speech coding, and the mobility of support higher level, even also make the user can use voice communications services so that per hour the speed of 100Km moves as the user.In addition, a large amount of countries have adopted the WCDMA communication means, and are continued to be used in exploitation the technical specification of WCDMA service by the 3GPP that the various mechanisms from Korea S, Europe, Japan, the U.S., China etc. form.
Simultaneously, because the above-mentioned advantage of WCDMA system even provide in the country of CDMA-2000 service in Korea S, the U.S., China etc. basicly, has also made up the WCDMA network in recent years so that WCDMA to be provided service.
With reference to figure 1, show a kind of schematic block diagram of mobile radio communication network, described network can provide WCDMA service basicly in the communication environment that has made up the CDMA-2000 network.
For purpose of description, suppose that some part in the CDMA-2000 district 120 that the CDMA-2000 service is provided provides WCDMA service.The available part of WCDMA service in the CDMA-2000 district 120 is called overlay region 130 and 140.That is, the user in the overlay region provides one of CDMA-2000 service or WCDMA service selectively.Here, obviously CDMA-2000 service and WCDMA serve and all need dual mode, dual band (below be called " MM-MB ") terminal.
MM- MB terminal 110 and 112 is supported multi-mode and multiband.Here, multi-mode comprises synchronous mode, asynchronous mode etc., and multiband comprises: utilize the second generation mobile communication of 800MHz frequency band to serve, the 2.5th third-generation mobile communication service of 1.8GHz frequency band, the 4th third-generation mobile communication service that utilizes the 3G (Third Generation) Moblie service of about 2GHz frequency band and will provide in the near future are provided.According to the type of the communication service that in MM- MB terminal 110 and 112 present located zones, is provided, MM- MB terminal 110 and 112 can be switched to WCDMA pattern, IMT-200 pattern etc.
Fig. 2 shows the schematic block diagram of internal configurations of the MM-MB terminal 110 of prior art.
The MM-MB terminal 110 of prior art comprises: RF (video) antenna 210, RF transceiver 220, filter cell 230, modulator-demod 240, controller 250 etc.
The integrated operation of controller 250 control MM-MB terminals 110, and (promptly according to the reception RF signal that receives any type, according to the RF signal is WCDMA signal or CDMA-2000 signal), MM-MB terminal 110 is operated with one of WCDMA pattern and CDMA-2000 pattern selectively.In addition, if selected specific operator scheme, controller 250 sends to modulator-demod 240 with control signal, drives one of WCDMA modulator-demodulator 242 and CDMA-2000 modulator-demodulator 244 according to selected pattern thus.
Simultaneously, shift to CDMA-2000 district 120 from overlay region 130 or shift to from CDMA-2000 district 120 under the situation of overlay region 130, need the switching between WCDMA pattern and the CDMA-2000 pattern in MM-MB terminal 110.That is,, the WCDMA mode switch of MM-MB terminal 110 should be arrived the CDMA-2000 pattern if the 130 MM-MB terminals 110 that receive the WCDMA service move on to CDMA-2000 district 120 in the overlay region.
As described in reference to figure 2, for MM-MB terminal 110 from the WCDMA mode switch to the CDMA-2000 pattern, should stop to be in the WCDMA modulator-demodulator 242 of mode of operation, change into and should activate CDMA-2000 modulator-demodulator 244.Therefore, in traditional mobile communication environment, before activating CDMA-2000 modulator-demodulator 244, MM-MB terminal 110 has to break away from fully overlay region 130,, must no longer receive the WCDMA signal that is.
Yet, before MM-MB terminal 110 is had to break away from overlay region 130 and activated the CDMA-2000 modulator-demodulator, call out in the traditional scheme of having to disconnect with the WCDMA complete network, MM-MB terminal 110 need about 10 to 15 seconds with its operator scheme from the WCDMA mode switch to the CDMA-2000 pattern.Therefore, the problem of appearance is, during switching to 10 to 15 seconds required considerable time of CDMA-2000 pattern fully, the 130 MM-MB terminals 110 of shifting to CDMA-2000 district 120 can not be used the mobile communication service at all from the overlay region.
Even provided foregoing description at moving of MM-MB terminal 110 130 to CDMA-2000 districts from the overlay region, identical problem appears under the inversion condition,, moves on to the situation of overlay region 140 when the MM-MB terminal 110 that is in CDMA-2000 district 120 that is.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of changing method, when shifting to the CDMA-2000 district from the overlay region with the terminal of WCDMA mode of priority operation, if the measured intensity of WCDMA pilot signal satisfies predetermined condition, then, can reduce the switching time between the modulator-demodulator by in advance the MM-MB terminal being switched to the CDMA-2000 idle condition.
According to a first advantageous embodiment of the invention, a kind of method that is used for switching between modulator-demodulator is provided, when MM-MB (multi-mode multiband) terminal moves on to the CDMA-2000 district from the overlay region, each modulator-demodulator that uses in the MM-MB terminal is in the WCDMA idle condition, described method comprises step: (a) receive the WCDMA signal that sends from the WCDMA system, and utilize the WCDMA signal to measure Ec/Io (carrier energy/other interference); (b) determine that whether Ec/Io is less than predetermined CDMA-2000ON threshold value TH
ON(c) if Ec/Io less than TH
ON, then the driving timing device comes Measuring Time to pass, and whether definite passage of time has exceeded default CDMA-2000ON state time (condition time) H
d(d) if passage of time has exceeded H
d, then activate the CDMA-2000 modulator-demodulator; And the initialization of (e) carrying out the CDMA-2000 system, so that the MM-MB terminal is switched to the CDMA-2000 idle condition.
According to second preferred embodiment of the present invention, a kind of method that is used for switching between modulator-demodulator is provided, when the MM-MB terminal moves on to the CDMA-2000 district from the overlay region, each modulator-demodulator that uses in the MM-MB terminal is in the WCDMA service condition, described method comprises step: (a) receive the WCDMA signal that sends from the WCDMA system, and utilize the WCDMA signal to measure Ec/Io (carrier energy/other interference); (b) determine that whether Ec/Io is less than predetermined CDMA-2000ON threshold value TH
ON(c) if Ec/Io less than TH
ON, then the driving timing device comes Measuring Time to pass, and whether definite passage of time has exceeded default CDMA-2000ON state time H
d(d) if passage of time has exceeded H
d, then activate the CDMA-2000 modulator-demodulator, and whether definite WCDMA calling stops; And if (e) determine to stop WCDMA and call out, then carry out the initialization of CDMA-2000 system, so that the MM-MB terminal is switched to the CDMA-2000 idle condition.
According to the 3rd preferred embodiment of the present invention, a kind of method that is used for switching between modulator-demodulator is provided, when MM-MB (multi-mode multiband) terminal moves on to the overlay region from the CDMA-2000 district, each modulator-demodulator that uses in the MM-MB terminal is in the CDMA-2000 idle condition, described method comprises step: (a) when keeping the MM-MB terminal to be in the CDMA-2000 idle condition, and monitor for pages channel periodically; (b) analyze the Overhead Message that receives from the CDMA-2000 system, and whether definite MM-MB terminal is arranged in the overlay region; (c) if determine that the MM-MB terminal is arranged in the overlay region, activate the WCDMA modulator-demodulator; And the initialization of (d) carrying out the WCDMA system, so that the MM-MB terminal is switched to the WCDMA idle condition.
According to the 4th preferred embodiment of the present invention, a kind of method that is used for switching between modulator-demodulator is provided, when MM-MB (multi-mode multiband) terminal moves on to the overlay region from the CDMA-2000 district, each modulator-demodulator that uses in the MM-MB terminal is in the CDMA-2000 service condition, described method comprises step: (a) when keeping the MM-MB terminal to be in the CDMA-2000 service condition, and monitor for pages channel periodically; (b) analyze the Overhead Message that receives from the CDMA-2000 system, and whether definite MM-MB terminal is arranged in the overlay region; (c), then when keeping the MM-MB terminal to be in the CDMA-2000 service condition, determine whether the CDMA-2000 calling stops if determine that the MM-MB terminal is arranged in the overlay region; (d) call out termination if determine CDMA-2000, activate the WCDMA modulator-demodulator; And the initialization of (e) carrying out the WCDMA system, so that the MM-MB terminal is switched to the WCDMA idle condition.
According to the 5th preferred embodiment of the present invention, provide a kind of and can adapt to synchronous CDMA-2000 service and asynchronous WCDMA service and the multi-mode multiband terminal of in two frequency bands, operating at least, described multi-mode multiband terminal comprises: RF (radio frequency) antenna is used to receive and dispatch CDMA-2000 signal and/or WCDMA signal; The RF transceiver is used for the WCDMA pilot signal that demodulation receives from the RF antenna and exports demodulation WCDMA pilot signal; Pilot signal measurement unit is used to measure the intensity of demodulation WCDMA pilot signal, to produce Ec/Io; WCDMA modulator-demodulator and CDMA-2000 modulator-demodulator are used to handle the digital signal that receives from the RF receiver, and respectively according to carrying out call treatment by the agreement of WCDMA standard and CDMA-2000 standard definition; Flash memory is used to store modulator-demodulator to the modulator-demodulator changeover program, and described program can be carried out switching between WCDMA modulator-demodulator and the CDMA-2000 modulator-demodulator according to Ec/Io; And controller, be used to load modulator-demodulator to the modulator-demodulator changeover program, and if Ec/Io keep less than predetermined CDMA-2000ON threshold value TH
ONPassage of time greater than default CDMA-2000ON state time H
d, then activate the CDMA-2000 modulator-demodulator.
Description of drawings
In conjunction with the accompanying drawings, according to the following description of preferred embodiment, above and other purpose of the present invention and characteristics will be more apparent, wherein:
Fig. 1 shows the schematic block diagram of the mobile radio communication network that the WCDMA service can be provided basicly in the communication environment that has made up the CDMA-2000 network;
Fig. 2 has presented the schematic block diagram of the internal configurations that prior art MM-MB terminal is shown;
Fig. 3 has described the schematic block diagram of the internal configurations of MM-MB terminal according to the preferred embodiment of the invention;
Fig. 4 shows the curve chart according to first preferred embodiment of the invention, description activation condition of CDMA-2000 modulator-demodulator when the MM-MB terminal that is in idle condition moves on to the CDMA-2000 district from the overlay region;
Fig. 5 provides the flow chart according to the first embodiment of the present invention, description activation sequence of CDMA-2000 modulator-demodulator when the MM-MB terminal that is in idle condition moves on to the CDMA-2000 district from the overlay region;
Fig. 6 shows the curve chart according to second preferred embodiment of the invention, description activation condition of CDMA-2000 modulator-demodulator when the MM-MB terminal that is in service condition moves on to the CDMA-2000 district from the overlay region;
Fig. 7 provides according to a second embodiment of the present invention, has described the flow chart of the activation sequence of CDMA-2000 modulator-demodulator when the MM-MB terminal that is in service condition moves on to the CDMA-2000 district from the overlay region;
Fig. 8 shows according to third preferred embodiment of the invention, describes the flow chart when the MM-MB terminal that is in idle condition activation sequence of WCDMA modulator-demodulator when the CDMA-2000 district moves on to the overlay region; And
Fig. 9 has provided according to four preferred embodiment of the invention, has described the flow chart when the MM-MB terminal that is in service condition activation sequence of WCDMA modulator-demodulator when the CDMA-2000 district moves on to the overlay region.
Embodiment
Below, the preferred embodiments of the present invention will be described with reference to the accompanying drawings.Here, identical reference number is represented identical parts in the different accompanying drawings.In addition, note,, then omit detailed description this parts or function if the description of well-known components or function can make technical essential of the present invention unclear.
With reference to figure 3, provide the schematic block diagram of the internal configurations of MM-MB terminal 300 according to the preferred embodiment of the invention is shown.
Identical with MM-MB terminal 110 shown in Figure 2, MM-MB terminal 300 also comprises according to the preferred embodiment of the invention: RF antenna 310, RF transceiver 320, filter cell 330, modulator-demod 340 and controller 360.Therefore, the detailed description of the same parts shown in omission and Fig. 2 changes into and concentrates and elaborate different parts.MM-MB terminal 300 is carried out quick switching between WCDMA modulator-demodulator 342 and the CDMA-2000 modulator-demodulator 344 by using pilot signal measurement unit 350, flash memory 370 and timer 380.
Hand-off process between the modulator-demodulator in the MM-MB terminal 300 is according to the preferred embodiment of the invention described now.Here, according to a preferred embodiment of the invention, suppose that the MM-MB terminal that is arranged in the overlay region basically with the operation of WCDMA mode of priority, is used for checking the frequency band that uses in the WCDMA system.
Pilot signal measurement unit 350 with the MM-MB terminal 300 of WCDMA mode of priority operation receives the WCDMA pilot signals by RF antenna 310 and RF transceiver 320, and measures the Ec/Io (carrier energy/other interference) from the WCDMA pilot signal that receives.Then, pilot signal measurement unit 350 sends to controller 360 with the measurement Ec/Io of WCDMA pilot signal.
Here, Ec/Io represents the ratio of signal strength signal intensity with the gross power of the noise that receives of pilot channel, is used to indicate the signal quality of pilot channel.Usually, in business in the not busy and nonoverlapping zone of radio wave, the scope of Ec/Io from approximately-1 to approximately-2dB, and at heavy traffic and radio wave slightly in the overlapping areas, the scope of Ec/Io from approximately-6 to approximately-12dB.Particularly, at the higher floor place of the skyscraper of radio wave high superposed, can measure approximately-Ec/Io of 10dB.Approximately-10 under the Ec/Io of-14dB, begin realize voice and disconnect phenomenon, if Ec/Io drop to-below the 14dB, can not continue call conversation again.
In addition, the CPICH (Common Pilot Channel) by forward physical channels transmits the WCDMA pilot signal.The single time slot of Common Pilot Channel comprises the symbol of 2560 chips or 10 20 bits.15 time slots have constituted single frame, and the sum of this frame is 72.
Controller 360 detects the Ec/Io that receives from pilot signal measurement unit 350, and checks continuously whether Ec/Io is lower than and activate the required default CDMA-2000ON threshold value TH of CDMA-2000 modulator-demodulator 344
ONBe lower than TH at Ec/Io
ONThe time, controller 360 produces drive signal and sends it to timer 380, so that timer 380 Measuring Time are passed.Here, passage of time was meant before activating the CDMA-2000 modulator-demodulator, kept Ec/Io less than TH
ON(Ec/Io＜TH
ON) during accumulated time.If the passage of time of measuring begins to exceed predetermined CDMA-2000ON state time H
d, then controller 360 is activated CDMA-2000 modulator-demodulator 344.In addition, in case activated CDMA-2000 modulator-demodulator 344, then controller 360 produces and emission deactivation (inactive) signal, to stop to activate WCDMA modulator-demodulator 342.Till deactivation WCDMA modulator-demodulator 342, need about several seconds.
Simultaneously, according to the present invention, flash memory 370 has been stored modulator-demodulator to the modulator-demodulator changeover program, and described program makes controller 360 carry out modulator-demodulator immediately to the modulator-demodulator hand-off process by utilizing the EC/Io that receives from pilot signal measurement unit 50.Therefore, if the Ec/Io that measures by pilot signal measurement unit 350 less than predetermined TH
ONIf, or the system information that receives analyzed, disclosed terminal and entered the overlay region, then controller 360 can load be stored in flash memory 370 clocks modulator-demodulator to the modulator-demodulator changeover program.
Fig. 4 shows description and moves on to the curve chart of the activation condition of CDMA-2000 modulator-demodulator under the situation in CDMA-2000 district according to first preferred embodiment of the invention from the overlay region in the MM-MB terminal that is in the WCDMA idle condition.
When the Ec/Io that receives from the wireless base station such as the UTRAN (Universal Mobile Telecommunications System (UMTS) land radio access web) of WCDMA network less than default TH
ONThe time, the MM-MB terminal 300 of operating with the WCDMA mode of priority in the overlay region is at time point
Place's beginning Measuring Time is passed.Then, passing exceeds predetermined CDMA-2000ON state time H when the time
dThe time, MM-MB terminal 300 makes CDMA-2000 modulator-demodulator 344 at time point
The place is activated.Here, even because at time point
MM-MB terminal 300 does not yet break away from the overlay region after the place, still receives the WCDMA pilot signal continuously.
In above-mentioned curve chart, because in advance at time point
The place activates CDMA-2000 modulator-demodulator 344, carries out the switching of CDMA-2000 pattern before the MM-MB terminal enters the CDMA-2000 district in advance, has therefore greatly shortened and has carried out modulator-demodulator to the required time period of modulator-demodulator handover operation.
With reference to figure 5, provide and described the flow chart that moves on to the activation sequence of CDMA-2000 modulator-demodulator under the situation in CDMA-2000 district when the MM-MB terminal that be in the WCDMA idle condition from the overlay region.
Common reference Fig. 3 and 5, in the overlay region, MM-MB terminal 300 is operated under the WCDMA idle condition, and wherein said terminal receives the WCDMA pilot signal in the Common Pilot Channel that is included in the WCDMA system, and periodically checks paging channel message (S500).Then, MM-MB terminal 300 is measured from the Ec/Io in the WCDMA pilot signal that receives.
Afterwards, the controller 360 of MM-MB terminal 300 determines that whether the Ec/Io of measurement is less than TH
ON(S504).If determine that at step S504 Ec/Io is less than TH
ON, then the controller 360 of MM-MB terminal 300 drives built-in timer 380 and Measuring Time passing (S506).
Controller continues to determine whether the passage of time of measuring has exceeded predetermined CDMA-2000ON state time H
d(S508).Exceeded CDMA-2000ON state time H if disclosed the passage of time of measuring in the testing result of step S508
d, then controller 360 is controlled CDMA-2000 modulator-demodulators 344, so that it is activated (S510).
After step S510 activated CDMA-2000 modulator-demodulator 344, MM-MB terminal 300 was carried out the initialization (S512) of CDMA-2000 system.Here, initialization is meant and is used to be provided with the operation that the required information of terminal and establishment carry out the transition to the environment of idle condition.Determine that by system sub-state, pilot channel obtain sub-state, synchronizing channel is obtained sub-state etc. and carried out initialization successively.Because terminal initialization is a general knowledge well known in the art, omit detailed description to it.
After the initialization of completing steps S512, MM-MB terminal 300 is switched to CDMA-2000 idle condition (S514).
Fig. 6 shows the curve chart according to second preferred embodiment of the invention, description activation condition of CDMA-2000 modulator-demodulator 344 when the MM-MB terminal that is in the WCDMA service condition moves on to the CDMA-2000 district from the overlay region.
According to a second embodiment of the present invention, in the overlay region, be in MM-MB terminal 300 under the WCDMA service condition with WCDMA mode of priority operation, by utilizing principle that the Ec/Io that receives from UTRAN activates CDMA-2000 modulator-demodulator 344 and sequence with described identical with reference to figure 4.
Yet the difference of first and second embodiment is, when activating CDMA-2000 modulator-demodulator 344 under the WCDMA service condition, even at time point
After the place, still continue to detect Ec/Io according to the MM-MB terminal 300 of second embodiment.Even because at time point
MM-MB terminal 300 does not break away from the overlay region yet afterwards, still can continue to receive the WCDMA pilot signal.That is, even activated CDMA-2000 modulator-demodulator 344, MM-MB terminal 300 also can be controlled WCDMA modulator-demodulator 342, so that its maintenance is activated, and continues to receive the WCDMA pilot signal, till having finished the initialization of CDMA-2000 system.
Simultaneously, if the initialization to the CDMA-2000 system is not also finished, then MM-MB terminal 300 continues to determine whether to be in greater than deactivation from the Ec/Io of the WCDMA pilot signal that receives the required default CDMA-2000 OFF threshold value TH of CDMA-2000 modulator-demodulator 344 of mode of operation
OFF
Begin to exceed TH at the Ec/Io that measures
OffTime point
The place, controller 360 produces drive signal and sends it to built-in timer 380, and timer 380 Measuring Time are passed.Here, passage of time was meant before deactivation CDMA-2000 modulator-demodulator 344, keeps Ec/Io greater than TH
OFFAccumulated time during this time.
Begin to exceed predetermined CDMA-2000OFF state time H in the passage of time of measuring
cThe time (at time point
), controller 360 control CDMA-2000 modulator-demodulators 344 are so that it is deactivated.At this moment, stop because the WCDMA between MM-MB terminal 300 and the WCDMA system calls out not connect, if deactivated CDMA-2000 modulator-demodulator 344, MM-MB terminal 300 can keep the WCDMA service condition, i.e. its initial condition.
As mentioned above, if Ec/Io satisfies specified conditions,, also can deactivate CDMA-2000 modulator-demodulator 344 even then under the WCDMA service condition, activated after the CDMA-2000 modulator-demodulator 344.As a result, can reduce the power consumption of battery in the MM-MB terminal 300.
Fig. 7 be described according to a second embodiment of the present invention, the flow chart of the activation sequence of CDMA-2000 modulator-demodulator 344 when the MM-MB terminal that is in service condition moves on to the CDMA-2000 district from the overlay region.
Common reference Fig. 3 and 7, in the overlay region, the MM-MB terminal is operated under the WCDMA service condition, and wherein said terminal is by WCDMA system and Traffic Channel receiving and transmitting voice signal or grouped data (S700).Step S702 is identical to S510 with step S502 among Fig. 5 to S710, therefore omits detailed description.
The WCDMA that the MM-MB terminal is determined to be under the WCDMA service condition calls out whether stop (S712).If determine to have stopped the WCDMA calling at step S712, then MM-MB terminal 300 is checked other service channel in the WCDMA systems, and promptly FA (Frequency Distribution) (S714).
Then, MM-MB terminal 300 determines whether to search other WCDMA signal (S716) at step S714.If step S716 determines to search the announcement of WCDMA signal, then MM-MB terminal 300 is switched to WCDMA idle condition (S718).If opposite, that is,, then MM-MB terminal 300 is switched to CDMA-2000 idle condition (S720) if determine not search the WCDMA signal at step S716.Here, for MM-MB terminal 300 is switched to the CDMA-2000 idle condition, should carry out in advance with the step S512 place of Fig. 5 and state terminal initialization identical, that arrive the CDMA-2000 system.
Simultaneously, above-mentioned steps 714 to 718 is optionally, therefore can omit.That is,,, need step S714 to make being connected of 300 maintenances of MM-MB terminal and WCDMA system to S718 by retrieving adjacent service channel even WCDMA calls out unexpected the disconnection when MM-MB terminal 300 does not satisfy the activation condition of CDMA-2000 modulator-demodulator 344.Therefore, if major concern MM-MB terminal 300 can be omitted step S714 to S718 to the faster switching of CDMA-2000 idle condition,, when stopping the WCDMA calling, MM-MB terminal 300 can be switched to the CDMA-2000 idle condition in step 720.
Return refer step S712, call out not termination if determine WCDMA, then MM-MB terminal 300 also determines whether exceeded predetermined TH from the Ec/Io of the WCDMA pilot signal that receives
OFF(S722).If step S722 has disclosed Ec/Io greater than predetermined TH
OFF, then MM-MB terminal 300 driving built-in timer 380 come Measuring Time to pass (S724).On the other hand, if representing Ec/Io, step S722 is not more than predetermined TH
OFF, then handle and return step S712, whether stop to determine that WCDMA calls out.
MM-MB terminal 300 determines whether exceeded CDMA-2000OFF state time H in the passage of time that step S724 measures
c(S726).If having disclosed passage of time, step S726 begins to exceed H
c, then MM-MB terminal 300 makes 344 deactivations (S728) of CDMA-2000 modulator-demodulator.Then, CDMA-2000 modulator-demodulator 344 deactivated MM-MB terminals 300 are carried out step S702, and repeating step S702, so that measure the Ec/Io from the WCDMA pilot signal that receives.
On the other hand, if having disclosed passage of time, step S726 do not exceed H
c, whether then MM-MB terminal 300 is carried out step S712, stop so that determine the WCDMA calling.
With reference to figure 8, provide according to third preferred embodiment of the invention, described flow chart when the MM-MB terminal that is in CDMA-2000 idle condition activation sequence of WCDMA modulator-demodulator 342 when the CDMA-2000 district moves on to the overlay region.
Common reference Fig. 3 and 8, in the CDMA-2000 district, MM-MB terminal 300 is operated (S800) under the CDMA-2000 idle condition.Be under the CDMA-2000 idle condition MM-MB terminal 300 periodically the monitor for pages channel so that detect paging channel message (S802).Usually, every 1.28 seconds, send all types of state informations and the required access information of terminal connecting system of CDMA-2000 system to terminal from system by paging channel.
MM-MB terminal 300 is analyzed the Overhead Message (S804) from the paging channel message that the CDMA-2000 system sends.Here, Overhead Message is meant the message that sends in all terminals of system registry, and it is divided into configuration parameter and access parameter usually.Configuration parameter generally includes the configuration information of system self and adjacent system thereof, and access parameter comprises the information that the terminal connecting system is required.
Particularly, configuration parameter comprises system parameters message, neighbor list messages, CDMA Channel List Message, expanding system parameter message etc.Here, system parameters message is the most important message that is used for transmitting system information, comprise system information, register relevant information, submit information, power control information etc., wherein system information comprises PN (pseudo noise) sign indicating number, SID (system banner), NID (network identity) and base station (Base) ID (base station sign).
MM-MB terminal 300 is identification base station id information from the system parameters message that receives and analyze at step S804, and determines according to the base station id information whether MM-MB terminal 300 self is arranged in overlay region (S806).If determine that at step S806 MM-MB terminal 300 is in the overlay region, then MM-MB terminal 300 makes WCDMA modulator-demodulator 344 be activated (S808).
After activating WCDMA modulator-demodulator 344, MM-MB terminal 300 is carried out the initialization process (S810) of WCDMA system.Owing to the initialization process of the WCDMA system that is carried out by MM-MB terminal 300 is described similar to the step S512 place at Fig. 5, omit its detailed description.When step S810 has finished the WCDMA system initialization, MM-MB terminal 300 is switched to WCDMA idle condition (S812).
Fig. 9 is according to four preferred embodiment of the invention, has described the flow chart when the MM-MB terminal that is in CDMA-2000 service condition activation sequence of WCDMA modulator-demodulator 342 when the CDMA-2000 district moves on to the overlay region.
Common reference Fig. 3 and 9, MM-MB terminal 300 is under the CDMA-2000 service condition, and wherein said terminal is by CDMA-2000 system and Traffic Channel receiving and transmitting voice signal or grouped data (S900).Step S902 is identical to S806 with step S802 among Fig. 8 to S906, therefore omits its detailed description.
Even determine that at step S906 MM-MB terminal 300 is in the overlay region, because the CDMA-2000 service is still available in the overlay region, MM-MB terminal 300 still keeps the CDMA-2000 service condition and can not activate WCDMA modulator-demodulator 344 (S908) immediately.Then, the MM-MB terminal 300 that is in the CDMA-2000 service condition continues to keep determining CDMA-2000 calls out whether stop (S910).
If determine that at step S910 CDMA-2000 calls out termination, MM-MB terminal 300 is analyzed the Overhead Message (S912) that sends from the CDMA-2000 wireless base station.Particularly, MM-MB terminal 300 receives Overhead Message by analyzing at step S912, finds overlay region given under the WCDMA mode of priority.Detecting after MM-MB terminal 300 is positioned at zone under the WCDMA mode of priority, MM-MB terminal 300 makes WCDMA modulator-demodulator be activated (S914).Having the MM-MB terminal 300 that activates the WCDMA modulator-demodulator carries out the initialization (S916) of WCDMA system and is switched to WCDMA idle condition (S918).
As mentioned above, the shortcoming of traditional MM-MB terminal is that in the MM-MB terminal, the switching of carrying out between built-in WCDMA modulator-demodulator and the built-in CDMA-2000 modulator-demodulator needs considerable time.Yet, according to the present invention, detect the signal strength signal intensity of the WCDMA signal that receives by the MM-MB terminal that is positioned at the overlay region constantly, if dropping to, signal strength signal intensity is lower than predetermined level, therefore then activate the CDMA-2000 modulator-demodulator in advance, can greatly reduce modulator-demodulator to modulator-demodulator switching time.
In addition, even activated the CDMA-2000 modulator-demodulator in advance, when during the intensity of WCDMA signal at the fixed time, continuing to be higher than predetermined level, can deactivate the CDMA-2000 modulator-demodulator, therefore, the power consumption of battery in the MM-MB terminal is minimized.
Although provided and described the present invention with reference to preferred embodiment, persons of ordinary skill in the art may appreciate that under the prerequisite that does not break away from the spirit and scope of the present invention that are defined by the following claims, can carry out various changes and modification.
Claims (30)
1. method that is used between modulator-demodulator, switching, when MM-MB (multi-mode multiband) terminal moves on to the CDMA-2000 district from the overlay region, each modulator-demodulator that uses in the MM-MB terminal is in the WCDMA idle condition, and described method comprises step:
(a) receive the WCDMA signal that sends from the WCDMA system, and utilize the WCDMA signal to measure Ec/Io (carrier energy/other interference);
(b) determine that whether Ec/Io is less than predetermined CDMA-2000 ON threshold value TH
ON
(c) if Ec/Io less than TH
ON, then the driving timing device comes Measuring Time to pass, and whether definite passage of time has exceeded default CDMA-2000 ON state time H
d
(d) if passage of time has exceeded H
d, then activate the CDMA-2000 modulator-demodulator; And
(e) initialization of execution CDMA-2000 system is so that switch to the CDMA-2000 idle condition with the MM-MB terminal.
2. changing method according to claim 1, wherein, (a) locates in step, and CPICH (Common Pilot Channel) is checked on MM-MB terminal periodic ground, to receive the WCDMA signal.
3. changing method according to claim 1, wherein, the accumulated time during the passage of time that step (c) is located is to keep Ec/Io less than CDMA-2000 ON threshold value.
4. changing method according to claim 1 wherein, determines that by system sub-state, pilot channel obtain sub-state and synchronizing channel and obtain sub-state and carry out the initialization of locating in step (e).
5. changing method according to claim 1, wherein, after the described MM-MB terminal of step (e) was switched to the CDMA-2000 idle condition, MM-MB terminal control WCDMA modulator-demodulator made described WCDMA modulator-demodulator deactivated.
6. method that is used between modulator-demodulator, switching, when the MM-MB terminal moved on to the CDMA-2000 district from the overlay region, each modulator-demodulator that uses in the MM-MB terminal was in the WCDMA service condition, and described method comprises step:
(a) receive the WCDMA signal that sends from the WCDMA system, and utilize the WCDMA signal to measure Ec/Io (carrier energy/other interference);
(b) determine that whether Ec/Io is less than predetermined C DMA-2000 ON threshold value TH
ON
(c) if Ec/Io less than TH
ON, then the driving timing device comes Measuring Time to pass, and whether definite passage of time has exceeded default CDMA-2000 ON state time H
d
(d) if passage of time has exceeded H
d, then activate the CDMA-2000 modulator-demodulator, and whether definite WCDMA calling stops; And
(e) if determining to stop WCDMA calls out, then carry out the initialization of CDMA-2000 system, so that the MM-MB terminal is switched to the CDMA-2000 idle condition.
7. method according to claim 6, wherein, (a) locates in step, and CPICH (Common Pilot Channel) is checked on MM-MB terminal periodic ground, to receive the WCDMA signal.
8. method according to claim 6, wherein, the accumulated time during the passage of time that step (c) is located is to keep Ec/Io less than CDMA-2000 ON threshold value.
9. changing method according to claim 6 wherein, is not called out if stop WCDMA, and then step (d) comprises step:
(d1) determine that whether Ec/Io is greater than predetermined C DMA-2000 OFF threshold value TH
OFF
(d2) if Ec/Io greater than TH
OFF, then the driving timing device is measured another passage of time, and determines whether described another passage of time exceeds default CDMA-2000 OFF state time H
cAnd
(d3) if described another passage of time exceeds H
c, then deactivate the CDMA-2000 modulator-demodulator and return step (a).
10. method according to claim 9, wherein, if locate Ec/Io greater than TH in step (d1)
OFF, then the MM-MB terminal is returned step (d) so that whether definite once more WCDMA calling stops.
11. method according to claim 9, wherein, the accumulated time during described another passage of time that step (d2) is located is to keep Ec/Io greater than CDMA-2000 OFF threshold value.
12. according to claim 9 or 11 described methods, wherein, if passage of time does not exceed CDMA-2000 OFF state time H
c, then the MM-MB terminal is returned step (d) so that whether definite once more WCDMA calling stops.
13. method according to claim 6 wherein, stops if WCDMA calls out, then step (e) comprises step:
(e1) another service channel FA (Frequency Distribution) of inspection WCDMA system;
(e2) determine whether to check another WCDMA signal; And
(e3) if check described another WCDMA signal, then the MM-MB terminal is switched to the WCDMA idle condition.
14. method according to claim 13, wherein, if do not check described another WCDMA signal in step (e2), then the MM-MB terminal is carried out the initialization of CDMA-2000 system, so that be switched to the CDMA-2000 idle condition.
15. method according to claim 14, wherein, after described MM-MB terminal was switched to the CDMA-2000 idle condition, MM-MB terminal control WCDMA modulator-demodulator made described WCDMA modulator-demodulator deactivated.
16. method that is used between modulator-demodulator, switching, when MM-MB (multi-mode multiband) terminal moves on to the overlay region from the CDMA-2000 district, each modulator-demodulator that uses in the MM-MB terminal is in the CDMA-2000 idle condition, and described method comprises step:
(a) when keeping the MM-MB terminal to be in the CDMA-2000 idle condition, monitor for pages channel periodically;
(b) analyze the Overhead Message that receives from the CDMA-2000 system, and whether definite MM-MB terminal is arranged in the overlay region;
(c) if determine that the MM-MB terminal is arranged in the overlay region, activate the WCDMA modulator-demodulator; And
(d) initialization of execution WCDMA system is so that switch to the WCDMA idle condition with the MM-MB terminal.
17. method according to claim 16, wherein, (b) locates in step, and the MM-MB terminal determines by the base station ID that research is included in the system parameters message in the Overhead Message whether the MM-MB terminal is arranged in the overlay region.
18. method according to claim 16, wherein, if determine that in step (b) the MM-MB terminal is arranged in the overlay region, then the MM-MB terminal is returned step (a) so that monitor for pages channel once more.
19. method according to claim 16, wherein, after described MM-MB terminal was switched to the WCDMA idle condition, the MM-MB terminal made described CDMA-2000 modulator-demodulator deactivated.
20. method that is used between modulator-demodulator, switching, when MM-MB (multi-mode multiband) terminal moves on to the overlay region from the CDMA-2000 district, each modulator-demodulator that uses in the MM-MB terminal is in the CDMA-2000 service condition, and described method comprises step:
(a) when keeping the MM-MB terminal to be in the CDMA-2000 service condition, monitor for pages channel periodically;
(b) analyze the Overhead Message that receives from the CDMA-2000 system, and whether definite MM-MB terminal is arranged in the overlay region;
(c), then when keeping the MM-MB terminal to be in the CDMA-2000 service condition, determine whether the CDMA-2000 calling stops if determine that the MM-MB terminal is arranged in the overlay region;
(d) call out termination if determine CDMA-2000, then activate the WCDMA modulator-demodulator; And
(e) initialization of execution WCDMA system is so that switch to the WCDMA idle condition with the MM-MB terminal.
21. method according to claim 20, wherein, (b) locates in step, and the MM-MB terminal determines by the base station ID that research is included in the system parameters message in the Overhead Message whether the MM-MB terminal is arranged in the overlay region.
22. method according to claim 20, wherein, if determine that in step (b) the MM-MB terminal is arranged in the overlay region, then process is returned step (a) so that monitor for pages channel once more.
23. method according to claim 20, wherein, after described MM-MB terminal was switched to the WCDMA idle condition, the MM-MB terminal made described CDMA-2000 modulator-demodulator deactivated.
24. one kind can adapt to synchronous CDMA-2000 service and asynchronous WCDMA service and the multi-mode multiband terminal of operating at least in two frequency bands, described multi-mode multiband terminal comprises:
RF (radio frequency) antenna is used to receive and dispatch CDMA-2000 signal and/or WCDMA signal;
The RF transceiver is used for the WCDMA pilot signal that demodulation receives from the RF antenna and exports demodulation WCDMA pilot signal;
Pilot signal measurement unit is used to measure the intensity of demodulation WCDMA pilot signal, to produce Ec/Io;
WCDMA modulator-demodulator and CDMA-2000 modulator-demodulator are used to handle the digital signal that receives from the RF receiver, and respectively according to carrying out call treatment by the agreement of WCDMA standard and CDMA-2000 standard definition;
Flash memory is used to store modulator-demodulator to the modulator-demodulator changeover program, and described program can be carried out switching between WCDMA modulator-demodulator and the CDMA-2000 modulator-demodulator according to Ec/Io; And
Controller is used to load modulator-demodulator to the modulator-demodulator changeover program, and if keep Ec/Io less than predetermined C DMA-2000 ON threshold value TH
ONPassage of time during this time is greater than default CDMA-2000 ON state time H
d, then activate the CDMA-2000 modulator-demodulator.
25. multi-mode multiband terminal according to claim 24, wherein, when Ec/Io begins less than CDMA-2000 ON threshold value, maybe when determining that by analytical system information multi-mode multiband terminal enters the overlay region, controller loads modulator-demodulator to the modulator-demodulator changeover program.
26. multi-mode multiband terminal according to claim 24, wherein, after thereby the initialization that activates the CDMA-2000 modulator-demodulator and be accomplished to the CDMA-2000 system switches to the CDMA-2000 idle condition with multi-mode multiband terminal, WCDMA modulator-demodulator in the controller control operation makes described WCDMA modulator-demodulator deactivated.
27. multi-mode multiband terminal according to claim 24, wherein, even CDMA-2000 is activated, if keep Ec/Io greater than predetermined C DMA-2000 OFF threshold value TH
OFFPassage of time during this time is greater than default CDMA-2000 OFF state time H
c, then controller control CDMA-2000 makes described CDMA-2000 deactivated.
28. multi-mode multiband terminal according to claim 24, wherein, after thereby the initialization that activates the WCDMA modulator-demodulator and finish the WCDMA system switches to the WCDMA idle condition with multi-mode multiband terminal, CDMA-2000 modulator-demodulator in the controller control operation makes described CDMA-2000 modulator-demodulator deactivated.
29. according to claim 24 or 27 described multi-mode multiband terminals, wherein, with relevant CDMA-2000 ON threshold value TH
ON, CDMA-2000 ON state time H
d, CDMA-2000 OFF threshold value TH
OFFWith CDMA-2000 OFF state time H
cInformation stores at modulator-demodulator in the modulator-demodulator changeover program.
30. multi-mode multiband terminal according to claim 24 also comprises timer, is used for passing detection time and passage of time being reported to controller.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030070413A KR100560845B1 (en) | 2003-10-09 | 2003-10-09 | Method for Modem Switching for use with MM-MB Terminal |
| KR10-2003-0070413 | 2003-10-09 | ||
| KR1020030070413 | 2003-10-09 | ||
| PCT/KR2004/002570 WO2005034389A1 (en) | 2003-10-09 | 2004-10-08 | Method for modem switching for use with mm-mb terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1864350A true CN1864350A (en) | 2006-11-15 |
| CN1864350B CN1864350B (en) | 2012-08-22 |
Family
ID=34420590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2004800293929A Expired - Fee Related CN1864350B (en) | 2003-10-09 | 2004-10-08 | Method for modem switching for use with mm-mb terminal |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7978664B2 (en) |
| JP (1) | JP4316612B2 (en) |
| KR (1) | KR100560845B1 (en) |
| CN (1) | CN1864350B (en) |
| BR (1) | BRPI0415193A (en) |
| WO (1) | WO2005034389A1 (en) |
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- 2004-10-08 WO PCT/KR2004/002570 patent/WO2005034389A1/en active Application Filing
- 2004-10-08 BR BRPI0415193-3A patent/BRPI0415193A/en not_active IP Right Cessation
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Also Published As
| Publication number | Publication date |
|---|---|
| JP4316612B2 (en) | 2009-08-19 |
| US20070104142A1 (en) | 2007-05-10 |
| CN1864350B (en) | 2012-08-22 |
| US7978664B2 (en) | 2011-07-12 |
| KR100560845B1 (en) | 2006-03-13 |
| KR20050034492A (en) | 2005-04-14 |
| WO2005034389A1 (en) | 2005-04-14 |
| BRPI0415193A (en) | 2006-11-28 |
| JP2007508738A (en) | 2007-04-05 |
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